1 /***************************************************************************
2 * Copyright (C) 2005-2015 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
21 #include "clientauthhandler.h"
23 // TODO: support system application proxy (new in Qt 4.6)
34 #include "clientsettings.h"
35 #include "peerfactory.h"
37 using namespace Protocol;
39 ClientAuthHandler::ClientAuthHandler(CoreAccount account, QObject *parent)
40 : AuthHandler(parent),
45 _connectionFeatures(0)
51 void ClientAuthHandler::connectToCore()
53 CoreAccountSettings s;
56 QSslSocket *socket = new QSslSocket(this);
57 // make sure the warning is shown if we happen to connect without SSL support later
58 s.setAccountValue("ShowNoClientSslWarning", true);
60 if (_account.useSsl()) {
61 if (s.accountValue("ShowNoClientSslWarning", true).toBool()) {
62 bool accepted = false;
63 emit handleNoSslInClient(&accepted);
65 emit errorMessage(tr("Unencrypted connection canceled"));
68 s.setAccountValue("ShowNoClientSslWarning", false);
71 QTcpSocket *socket = new QTcpSocket(this);
74 // TODO: Handle system proxy
75 #ifndef QT_NO_NETWORKPROXY
76 if (_account.useProxy()) {
77 QNetworkProxy proxy(_account.proxyType(), _account.proxyHostName(), _account.proxyPort(), _account.proxyUser(), _account.proxyPassword());
78 socket->setProxy(proxy);
83 connect(socket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), SLOT(onSocketStateChanged(QAbstractSocket::SocketState)));
84 connect(socket, SIGNAL(readyRead()), SLOT(onReadyRead()));
85 connect(socket, SIGNAL(connected()), SLOT(onSocketConnected()));
87 emit statusMessage(tr("Connecting to %1...").arg(_account.accountName()));
88 socket->connectToHost(_account.hostName(), _account.port());
92 void ClientAuthHandler::onSocketStateChanged(QAbstractSocket::SocketState socketState)
97 case QAbstractSocket::HostLookupState:
99 text = tr("Looking up %1...").arg(_account.hostName());
101 case QAbstractSocket::ConnectingState:
103 text = tr("Connecting to %1...").arg(_account.hostName());
105 case QAbstractSocket::ConnectedState:
106 text = tr("Connected to %1").arg(_account.hostName());
108 case QAbstractSocket::ClosingState:
110 text = tr("Disconnecting from %1...").arg(_account.hostName());
112 case QAbstractSocket::UnconnectedState:
114 text = tr("Disconnected");
115 // Ensure the disconnected() signal is sent even if we haven't reached the Connected state yet.
116 // The baseclass implementation will make sure to only send the signal once.
117 // However, we do want to prefer a potential socket error signal that may be on route already, so
118 // give this a chance to overtake us by spinning the loop...
119 QTimer::singleShot(0, this, SLOT(onSocketDisconnected()));
126 if (!text.isEmpty()) {
127 emit statusMessage(text);
131 void ClientAuthHandler::onSocketError(QAbstractSocket::SocketError error)
133 if (_probing && error == QAbstractSocket::RemoteHostClosedError) {
138 _probing = false; // all other errors are unrelated to probing and should be handled
139 AuthHandler::onSocketError(error);
143 void ClientAuthHandler::onSocketDisconnected()
145 if (_probing && _legacy) {
146 // Remote host has closed the connection while probing
148 disconnect(socket(), SIGNAL(readyRead()), this, SLOT(onReadyRead()));
149 emit statusMessage(tr("Reconnecting in compatibility mode..."));
150 socket()->connectToHost(_account.hostName(), _account.port());
154 AuthHandler::onSocketDisconnected();
158 void ClientAuthHandler::onSocketConnected()
161 qWarning() << Q_FUNC_INFO << "Peer already exists!";
165 socket()->setSocketOption(QAbstractSocket::KeepAliveOption, true);
168 // First connection attempt, try probing for a capable core
171 QDataStream stream(socket()); // stream handles the endianness for us
172 stream.setVersion(QDataStream::Qt_4_2);
174 quint32 magic = Protocol::magic;
176 if (_account.useSsl())
177 magic |= Protocol::Encryption;
179 magic |= Protocol::Compression;
183 // here goes the list of protocols we support, in order of preference
184 PeerFactory::ProtoList protos = PeerFactory::supportedProtocols();
185 for (int i = 0; i < protos.count(); ++i) {
186 quint32 reply = protos[i].first;
187 reply |= protos[i].second<<8;
188 if (i == protos.count() - 1)
189 reply |= 0x80000000; // end list
193 socket()->flush(); // make sure the probing data is sent immediately
197 // If we arrive here, it's the second connection attempt, meaning probing was not successful -> enable legacy support
199 qDebug() << "Legacy core detected, switching to compatibility mode";
201 RemotePeer *peer = PeerFactory::createPeer(PeerFactory::ProtoDescriptor(Protocol::LegacyProtocol, 0), this, socket(), Compressor::NoCompression, this);
202 // Only needed for the legacy peer, as all others check the protocol version before instantiation
203 connect(peer, SIGNAL(protocolVersionMismatch(int,int)), SLOT(onProtocolVersionMismatch(int,int)));
209 void ClientAuthHandler::onReadyRead()
211 if (socket()->bytesAvailable() < 4)
215 return; // make sure to not read more data than needed
218 disconnect(socket(), SIGNAL(readyRead()), this, SLOT(onReadyRead()));
221 socket()->read((char *)&reply, 4);
222 reply = qFromBigEndian<quint32>(reply);
224 Protocol::Type type = static_cast<Protocol::Type>(reply & 0xff);
225 quint16 protoFeatures = static_cast<quint16>(reply>>8 & 0xffff);
226 _connectionFeatures = static_cast<quint8>(reply>>24);
228 Compressor::CompressionLevel level;
229 if (_connectionFeatures & Protocol::Compression)
230 level = Compressor::BestCompression;
232 level = Compressor::NoCompression;
234 RemotePeer *peer = PeerFactory::createPeer(PeerFactory::ProtoDescriptor(type, protoFeatures), this, socket(), level, this);
236 qWarning() << "No valid protocol supported for this core!";
237 emit errorPopup(tr("<b>Incompatible Quassel Core!</b><br>"
238 "None of the protocols this client speaks are supported by the core you are trying to connect to."));
240 requestDisconnect(tr("Core speaks none of the protocols we support"));
244 if (peer->protocol() == Protocol::LegacyProtocol) {
245 connect(peer, SIGNAL(protocolVersionMismatch(int,int)), SLOT(onProtocolVersionMismatch(int,int)));
253 void ClientAuthHandler::onProtocolVersionMismatch(int actual, int expected)
255 emit errorPopup(tr("<b>The Quassel Core you are trying to connect to is too old!</b><br>"
256 "We need at least protocol v%1, but the core speaks v%2 only.").arg(expected, actual));
257 requestDisconnect(tr("Incompatible protocol version, connection to core refused"));
261 void ClientAuthHandler::setPeer(RemotePeer *peer)
263 qDebug().nospace() << "Using " << qPrintable(peer->protocolName()) << "...";
266 connect(_peer, SIGNAL(transferProgress(int,int)), SIGNAL(transferProgress(int,int)));
268 // The legacy protocol enables SSL later, after registration
269 if (!_account.useSsl() || _legacy)
271 // otherwise, do it now
273 checkAndEnableSsl(_connectionFeatures & Protocol::Encryption);
277 void ClientAuthHandler::startRegistration()
279 emit statusMessage(tr("Synchronizing to core..."));
281 // useSsl will be ignored by non-legacy peers
284 useSsl = _account.useSsl();
287 _peer->dispatch(RegisterClient(Quassel::buildInfo().fancyVersionString, Quassel::buildInfo().buildDate, useSsl));
291 void ClientAuthHandler::handle(const ClientDenied &msg)
293 emit errorPopup(msg.errorString);
294 requestDisconnect(tr("The core refused connection from this client"));
298 void ClientAuthHandler::handle(const ClientRegistered &msg)
300 _coreConfigured = msg.coreConfigured;
301 _backendInfo = msg.backendInfo;
303 Client::setCoreFeatures(static_cast<Quassel::Features>(msg.coreFeatures));
305 // The legacy protocol enables SSL at this point
306 if(_legacy && _account.useSsl())
307 checkAndEnableSsl(msg.sslSupported);
313 void ClientAuthHandler::onConnectionReady()
315 emit connectionReady();
316 emit statusMessage(tr("Connected to %1").arg(_account.accountName()));
318 if (!_coreConfigured) {
320 emit startCoreSetup(_backendInfo);
322 else // TODO: check if we need LoginEnabled
327 void ClientAuthHandler::setupCore(const SetupData &setupData)
329 _peer->dispatch(setupData);
333 void ClientAuthHandler::handle(const SetupFailed &msg)
335 emit coreSetupFailed(msg.errorString);
339 void ClientAuthHandler::handle(const SetupDone &msg)
343 emit coreSetupSuccessful();
347 void ClientAuthHandler::login(const QString &user, const QString &password, bool remember)
349 _account.setUser(user);
350 _account.setPassword(password);
351 _account.setStorePassword(remember);
356 void ClientAuthHandler::login(const QString &previousError)
358 emit statusMessage(tr("Logging in..."));
359 if (_account.user().isEmpty() || _account.password().isEmpty() || !previousError.isEmpty()) {
361 emit userAuthenticationRequired(&_account, &valid, previousError); // *must* be a synchronous call
362 if (!valid || _account.user().isEmpty() || _account.password().isEmpty()) {
363 requestDisconnect(tr("Login canceled"));
368 _peer->dispatch(Login(_account.user(), _account.password()));
372 void ClientAuthHandler::handle(const LoginFailed &msg)
374 login(msg.errorString);
378 void ClientAuthHandler::handle(const LoginSuccess &msg)
382 emit loginSuccessful(_account);
386 void ClientAuthHandler::handle(const SessionState &msg)
388 disconnect(socket(), 0, this, 0); // this is the last message we shall ever get
390 // give up ownership of the peer; CoreSession takes responsibility now
392 emit handshakeComplete(_peer, msg);
398 void ClientAuthHandler::checkAndEnableSsl(bool coreSupportsSsl)
401 Q_UNUSED(coreSupportsSsl);
403 CoreAccountSettings s;
404 if (coreSupportsSsl && _account.useSsl()) {
405 // Make sure the warning is shown next time we don't have SSL in the core
406 s.setAccountValue("ShowNoCoreSslWarning", true);
408 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket());
410 connect(sslSocket, SIGNAL(encrypted()), SLOT(onSslSocketEncrypted()));
411 connect(sslSocket, SIGNAL(sslErrors(QList<QSslError>)), SLOT(onSslErrors()));
412 qDebug() << "Starting encryption...";
414 sslSocket->startClientEncryption();
417 if (s.accountValue("ShowNoCoreSslWarning", true).toBool()) {
418 bool accepted = false;
419 emit handleNoSslInCore(&accepted);
421 requestDisconnect(tr("Unencrypted connection cancelled"));
424 s.setAccountValue("ShowNoCoreSslWarning", false);
425 s.setAccountValue("SslCert", QString());
437 void ClientAuthHandler::onSslSocketEncrypted()
439 QSslSocket *socket = qobject_cast<QSslSocket *>(sender());
442 if (!socket->sslErrors().count()) {
443 // Cert is valid, so we don't want to store it as known
444 // That way, a warning will appear in case it becomes invalid at some point
445 CoreAccountSettings s;
446 s.setAccountValue("SSLCert", QString());
449 emit encrypted(true);
458 void ClientAuthHandler::onSslErrors()
460 QSslSocket *socket = qobject_cast<QSslSocket *>(sender());
463 CoreAccountSettings s;
464 QByteArray knownDigest = s.accountValue("SslCert").toByteArray();
466 if (knownDigest != socket->peerCertificate().digest()) {
467 bool accepted = false;
468 bool permanently = false;
469 emit handleSslErrors(socket, &accepted, &permanently);
472 requestDisconnect(tr("Unencrypted connection canceled"));
477 s.setAccountValue("SslCert", socket->peerCertificate().digest());
479 s.setAccountValue("SslCert", QString());
482 socket->ignoreSslErrors();
485 #endif /* HAVE_SSL */